1. Pre-emptive scheduling, is the strategy of temporarily suspending a running process-
Ans: before the CPU time slice expires
2. Mutual exclusion problem occurs -
Ans: among processes that share resources
3. Sector interleaving in disks is done by -
Ans: the operating system
4. Disk scheduling involves deciding-
Ans: the order in which disk access requests must be serviced
5. Dirty bit is used to show the -
Ans: page that is modified after being loaded into cache memory
6. Fence register is used for-
Ans: memory protection.
7. The first-fit, best-fit and worst-fit algorithm can be used for-
Ans: contiguous allocation of memory
8. Give example of single-user operating systems-
Ans: MS-DOS, XENIX
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